Strain Effect Triggers Pt Adaptive Mechanism to Construct Brønsted Acid Microenvironment for Ampere‐Level Hydrogen Production From Alkaline Seawater
Abstract
ABSTRACT Intermittent renewable energy‐driven seawater hydrogen production can alleviate freshwater resource pressure and is of great significance in future energy systems. However, the localized microenvironment changes at the cathode and the strong interactions between other impurities and the electrolyzer lead to performance degradation and reduced equipment lifespan. Here, we report an alkaline seawater cathode catalyst for hydrogen production in an anion exchange membrane water electrolyzer (AEMWE). This catalyst can dynamically adjust the local reaction environment on the cathode surface. Through the reversible changes in the oxidation state of Pt in high‐entropy intermetallic compounds, a Brønsted acid‐like environment is formed near the reaction interface, inhibiting the formation of precipitates. In situ characterization confirmed that this Brønsted acid‐like environment can promote hydrogen production from alkaline seawater. Using alkaline seawater electrolysis, AEMWE operated stably for over 2000 h at an industrial‐grade current density of 1.0 A cm −2 (1.74 V).
Article Details
Authors (17)
Nianpeng Li
Institute of International Rivers and Eco‐Security Yunnan Key Laboratory of Ecological Protection and Resource Utilization of River‐lake Networks Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming China
Linfeng Xiao
Institute of International Rivers and Eco‐Security Yunnan Key Laboratory of Ecological Protection and Resource Utilization of River‐lake Networks Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming China
Anran Chen
Institute of International Rivers and Eco‐Security Yunnan Key Laboratory of Ecological Protection and Resource Utilization of River‐lake Networks Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming China
Hua Zhang
Hao Cheng
Xuguang An
Qingquan Kong
School of Mechanical Engineering Chengdu University Chengdu China
Yingjie Feng
Department of Catalytic Science SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd Beijing China
Weiping Liu
Key Laboratory of Sustainable Low-carbon Technologies for Textile Dyeing and Finishing, Ministry of Education, State Key Laboratory of Advanced Fiber Materials, College of Chemistry and Chemical Engineering
Qimeng Liu
State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection School of Materials Science and Engineering School of Earth and Environment Anhui University of Science and Technology Huainan China
Lei Zhang
Wen Liu
Yingtang Zhou
Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Center for Marine Aquaculture
Xiaobo Chen
Xue Zhao
Guangzhi Hu
Ying Wu